Madison County jailStacey Grays was sentenced today to 99 years in prison for killing Ronnie Lee Cawthorn in February of 2007.HUNTSVILLE, AL -- Stacey Grays was sentenced to 99 years in prison today for killing Ronnie Lee Cawthorn in 2007.

Grays, 20, was found guilty Nov. 6 of shooting Cawthorn, 22, to death at a convenience store at the corner of Pulaski Pike and Winchester Road.

Security video from a car wash near the scene showed Grays fired six shots at Cawthorn. Grays' lawyers argued that the two argued during a chance encounter and that the shooting was in self-defense, but prosecutors said Grays went to the store looking for Cawthorn.

Prosecutor Randy Dill said he was pleased Judge Jim Smith gave Grays the maximum sentence for what Dill called "nothing more than a cold-blooded murder."